Package org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer

Source Code of org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.ContentFileWriter

/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer;

import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import org.pentaho.reporting.engine.classic.core.ClassicEngineBoot;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.BundleNamespaces;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.BundleXmlModule;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.docbundle.WriteableDocumentBundle;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.DefaultTagDescription;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;

/**
* The content file is included exactly once in each bundle. This file orchestates the parsing process.
*
* @author Thomas Morgner
*/
public class ContentFileWriter implements BundleWriterHandler
{
  public ContentFileWriter()
  {
  }

  /**
   * Returns a relatively high processing order indicating this BundleWriterHandler should be one of the last processed
   * @return the relative processing order for this BundleWriterHandler
   */
  public int getProcessingOrder()
  {
    return 100000;
  }

  public String writeReport(final WriteableDocumentBundle bundle,
                            final BundleWriterState state)
      throws IOException, BundleWriterException
  {
    if (bundle == null)
    {
      throw new NullPointerException();
    }
    if (state == null)
    {
      throw new NullPointerException();
    }

    final BundleWriterState contentFileState = new BundleWriterState(state, "content.xml");

    final OutputStream outputStream = new BufferedOutputStream(bundle.createEntry(contentFileState.getFileName(),
        "text/xml"));
    final Configuration globalConfig = ClassicEngineBoot.getInstance().getGlobalConfig();
    final DefaultTagDescription tagDescription = new DefaultTagDescription(globalConfig,
        BundleXmlModule.TAG_DEF_PREFIX);
    final XmlWriter writer = new XmlWriter
        (new OutputStreamWriter(outputStream, "UTF-8"), tagDescription, "  ", "\n");
    writer.writeXmlDeclaration("UTF-8");

    final AttributeList rootAttributes = new AttributeList();
    rootAttributes.addNamespaceDeclaration("", BundleNamespaces.CONTENT);

    writer.writeTag(BundleNamespaces.CONTENT, "content", rootAttributes, XmlWriterSupport.OPEN);

    writer.writeComment(" The content.xml file remains intentionally empty. This file can be used to ");
    writer.writeComment(" inject global templates later. ");

    writer.writeCloseTag();
    writer.close();
    return contentFileState.getFileName();


  }
}
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